Fighting doesn't have to be about survival. It doesn't even have to be about pride.
At least, this is what Josh Rosenblatt contends in Why We Fight: One Man's Search for Meaning Inside the Ring. He intends to impress that to fight is to know who you are in a very immediate sense. Fighting, as he sees it, is the pursuit of active self-knowledge through self-endangerment, pain and risk. It's about facing and embracing what is dangerous and, in a way, making it beautiful.